i agree on this totally,
try to get the ip of the host sharing the file, and report them on the limewire site.

also if you just go to a paysite for sex, your guaranteed to have good quality stuff, no childporn, and no viruses. if you don't like to pay check this site out: *edit* deleted the site, sorry guys wasn't thinking of the little kids around *edit*

last solution could also be: don't download porn